Scrub brush



FIG. 1 is a rear perspective view of a scrub brush in accordance with the present disclosure;

FIG. 2 is a front view of a scrub brush in accordance with the present disclosure;

FIG. 3 is a rear view of a scrub brush in accordance with the present disclosure;

FIG. 4 is a side view of a scrub brush in accordance with the present disclosure;

FIG. 5 is a top view of a scrub brush in accordance with the present disclosure; and,

FIG. 6 is a bottom view of a scrub brush in accordance with the present disclosure.

The dot dash broken lines immediately adjacent to the shaded areas depict the boundaries of the claim and form no part thereof. The evenly spaced broken line within the shaded area of the claim depicts a feature of the scrub brush that is not included in the claim. All other evenly spaced broken lines and areas within them depict environmental subject matter that forms no part of the claimed design. 

CLAIM The ornamental design for a scrub brush, as shown and described. 